[BULK] Re: harvesting energy
dj at delorie.com
Fri Oct 28 22:34:30 EDT 2011
> Good point. Thanks. It's even worse than that. In the power mode, the
> Kill-a-Watt only shows whole watts, no fraction.
It's worse than that. IIRC mine only shows 6, 12, or 18 watts at that
low a value. Useless for really low power. I ended up using a test
board for a switching power supply to measure current and voltage at
the power jack.
> (The technology for this sort of thing must be reasonably solid. My
> new electric meter has an LCD rather than a spinning wheel and
I did a 16-channel power meter board using the tech they put in house
electric meters: http://www.delorie.com/electronics/powermeter/ -
24-bit DACs anyone? Serious stuff in those chips, assuming you want
to measure mostly accumulated watt-seconds.
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